JP5529169B2 - Lubrication and cooling of reduction gears with planetary gear trains - Google Patents

Lubrication and cooling of reduction gears with planetary gear trains Download PDF

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JP5529169B2
JP5529169B2 JP2011549627A JP2011549627A JP5529169B2 JP 5529169 B2 JP5529169 B2 JP 5529169B2 JP 2011549627 A JP2011549627 A JP 2011549627A JP 2011549627 A JP2011549627 A JP 2011549627A JP 5529169 B2 JP5529169 B2 JP 5529169B2
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gear
planetary
gear device
teeth
planetary gear
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JP2012518130A (en
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ゴーテイエ，ジエラール・フイリツプ
モレアル，セルジユ・ルネ
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Safran Aircraft Engines SAS
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SNECMA SAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
    • F02C3/107—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor with two or more rotors connected by power transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/40—Transmission of power
    • F05D2260/403—Transmission of power through the shape of the drive components
    • F05D2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F05D2260/40311—Transmission of power through the shape of the drive components as in toothed gearing of the epicyclical, planetary or differential type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0486—Gearings with gears having orbital motion with fixed gear ratio

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Details Of Gearings (AREA)
  • Retarders (AREA)

Description

本発明は基本的に、特に航空機エンジンなどのターボ機械における、遊星ステップダウン歯車装置を潤滑および冷却するための装置に関する。   The present invention basically relates to a device for lubricating and cooling planetary step-down gearing, particularly in turbomachines such as aircraft engines.

遊星ステップダウン歯車装置は、高レベルの動力を伝達するのに適している。ターボジェットエンジンにおいて、これは、プロペラよりもはるかに高速で回転している駆動軸から逆回転しているプロペラを駆動するために、使用されることが可能である。   The planetary step-down gear device is suitable for transmitting a high level of power. In a turbojet engine, this can be used to drive a propeller that rotates counterclockwise from a drive shaft that rotates at a much higher speed than the propeller.

従来の方法では、遊星歯車装置は中心または太陽歯車、外輪歯車、ならびに太陽歯車および輪歯車と噛み合う遊星歯車を含み、これら３つの部品のうちの１つの支持体は、歯車装置の動作を可能にするために、回転しないようになっていなければならない。遊星キャリアの回転が妨げられているとき、中心歯車および輪はそれぞれ駆動および従動しているか、またはその逆である。すると、歯車装置および遊星歯車の軸の潤滑および冷却は何ら困難を呈することなく、回転せずに、遊星歯車が中心歯車および輪と噛み合う領域に、および遊星歯車の軸に、連続的に油を噴霧することができるノズルによって、実行される。   In a conventional manner, the planetary gear set includes a center or sun gear, an outer ring gear, and a planet gear that meshes with the sun gear and ring gear, and the support of one of these three parts allows the operation of the gear set. In order to do so, it must be prevented from rotating. When rotation of the planet carrier is impeded, the central gear and wheel are driven and driven, respectively, or vice versa. Then, lubrication and cooling of the shafts of the gear unit and the planetary gear do not present any difficulty. Performed by a nozzle that can be sprayed.

ほとんどの一般的な構成において、回転中に静止しているのは外輪であり、駆動および従動しているのは中心歯車および遊星キャリアである。すると、遊星歯車の軸および噛み合い領域の潤滑によって問題が生じるが、これは従来技術において、加圧された油を搬送するための複雑な配管網によって解決され、これは摩耗に曝されて定期的に検査および交換される必要のある、運動用シールまたは回転継ぎ手を利用する。   In most common configurations, it is the outer ring that is stationary during rotation, and it is the central gear and the planet carrier that are driven and driven. The problem then arises due to the lubrication of the planetary gear shaft and meshing area, which is solved in the prior art by a complex piping network for conveying pressurized oil, which is subject to wear and is regularly Utilize motion seals or rotating joints that need to be inspected and replaced.

本発明の具体的な目的は、このような歯車装置を連続的に、そして回転継ぎ手に関わる圧力がかかった油の複雑な配管網に頼ることなく、冷却および潤滑することである。   A specific object of the present invention is to cool and lubricate such gearing continuously and without resorting to the complex piping network of oil under pressure on the rotary joint.

この目的のため、本発明は、中心歯車、外輪、ならびに中心歯車および外輪と噛み合う遊星歯車を含む遊星ステップダウン歯車装置であって、遊星歯車は遊星キャリア上に回転自在に装着されており、歯車装置は１組の歯および遊星歯車の軸に油を噴霧することによって動作する潤滑および冷却手段を含み、歯車装置は、潤滑および冷却手段が、遊星キャリアに固定されて油を回収するスコップを形成する円筒形ケーシングを含み、このケーシングが油を送達するための静止手段を包囲していることを特徴とする、遊星ステップダウン歯車装置を提供する。   For this purpose, the present invention is a planetary step-down gear device comprising a central gear, an outer ring, and a planetary gear meshing with the central gear and the outer ring, the planetary gear being rotatably mounted on the planet carrier, The apparatus includes a set of teeth and lubrication and cooling means that operate by spraying oil onto the shaft of the planetary gear, and the gearing forms a scoop that is secured to the planet carrier and with which the lubrication and cooling means is recovered. A planetary step-down gear device is provided, characterized in that the casing surrounds a stationary means for delivering oil.

遊星歯車の噛み合い領域およびその回転軸を潤滑および冷却するために、本発明において、油を送達するための静止手段を包囲する円筒形ケーシングに遊星キャリアを適合させれば十分である。これらの手段によって送達された油は、円筒形ケーシングにおける遠心効果によって回収され、そこから遊星歯車が噛み合う領域、および前記遊星歯車の軸の両方に、その目的のために回転継ぎ手を必ずしも使用することなく、送達されることが可能である。   In order to lubricate and cool the meshing area of the planetary gear and its axis of rotation, in the present invention it is sufficient to fit the planetary carrier to a cylindrical casing surrounding the stationary means for delivering oil. The oil delivered by these means is recovered by the centrifugal effect in the cylindrical casing, from which the planetary gear meshes and the planetary gear shaft both use a rotating joint for that purpose. And can be delivered.

したがって、これらの潤滑および冷却手段は、その単純性およびその信頼性によって、ならびにターボ機械において潤滑および冷却される必要のあるその他の機器に油を供給する手段との適合性によって、特徴付けられており、こうして歯車装置およびその他の機器のために共通の給油ポンプを設置することを可能にする。   Thus, these lubrication and cooling means are characterized by their simplicity and reliability and by their compatibility with the means of supplying oil to other equipment that needs to be lubricated and cooled in turbomachinery. Thus, it is possible to install a common oil pump for the gearing and other equipment.

本発明の別の特徴によれば、円筒形ケーシングは、遊星歯車の１組の歯および軸の方に向いているノズルに油を供給するための、放射状または実質的に放射状の導管を含む。   According to another feature of the invention, the cylindrical casing includes a radial or substantially radial conduit for supplying oil to a nozzle facing the set of teeth and shaft of the planetary gear.

本発明の好適な実施形態において、油を送達するための静止手段は、中心歯車の軸と平行であって円筒形ケーシングの方に半径方向に向いているインジェクタを担持する、少なくとも１つのストリップを含み、ケーシングは半径方向隔壁によって分離された環状区画を含み、その各々は供給ノズル用の導管に接続されている。   In a preferred embodiment of the invention, the stationary means for delivering oil comprises at least one strip carrying an injector parallel to the axis of the central gear and facing radially towards the cylindrical casing. The casing includes annular sections separated by a radial partition, each of which is connected to a conduit for a feed nozzle.

この構成は、より均一で定常的なやり方で、潤滑および冷却される必要のある様々な領域に向けて油が送達され得るようにする。   This configuration allows oil to be delivered to various areas that need to be lubricated and cooled in a more uniform and steady manner.

現実的な方法において、円筒形ケーシングおよび遊星キャリアは、中心歯車の両側に軸方向に位置し、これらは遊星歯車の間に延在する軸方向アームによって互いに接続されている。   In a practical way, the cylindrical casing and the planet carrier are located axially on either side of the central gear, which are connected to each other by an axial arm that extends between the planet gears.

本発明はまた、航空機エンジン用ターボジェットなどのターボ機械も提供するが、これは、タービン軸を１つまたは２つのプロペラ駆動軸に接続する前記のタイプの遊星ステップダウン歯車装置を含むことを特徴とする。   The invention also provides a turbomachine, such as an aircraft engine turbojet, which includes a planetary step-down gearing of the type described above that connects the turbine shaft to one or two propeller drive shafts. And

以下の添付図面を参照した例示によってなされる以下の記載を読むことで、本発明がより良く理解され、本発明のその他の特徴、詳細、および利点がより明らかとなる。   The invention will be better understood and other features, details and advantages of the invention will become apparent upon reading the following description made by way of example with reference to the accompanying drawings, in which:

従来技術のターボ機械における遊星ステップダウン歯車装置の軸方向断面における片側の模式図である。It is a schematic diagram of one side in the axial cross section of the planetary step-down gear device in the turbomachine of the prior art. 図１の歯車装置の前面模式図である。It is a front schematic diagram of the gear apparatus of FIG. 本発明のステップダウン歯車装置の前面模式図である。It is a front schematic diagram of the step-down gear device of the present invention. このステップダウン歯車装置の模式的軸方向断面図である。It is a typical axial sectional view of this step-down gear device. ターボ機械に装着された本発明のステップダウン歯車装置の軸方向断面における片側の模式図である。It is a schematic diagram of one side in the axial cross section of the step-down gear device of the present invention mounted on a turbo machine.

まず、図１を参照するが、これは、タービン軸１０とともに回転するように制約される中心または太陽歯車１４、ターボ機械の静止要素１８上に装着された静止第一外輪１６、エンジンのプロペラのうちの１つを回転駆動するために軸２２の末端に固定された可動第二外輪２０、を基本的に含む遊星ステップダウン歯車装置１２を通じてタービン軸１０から回転駆動される２つの逆回転しているプロペラを有する航空機ターボジェットなどのターボ機械に装着される公知の遊星ステップダウン歯車装置を示す図であり、前記軸は下流方向に延在してエンジンの静止構造要素２６上の軸受２４によって回転的に案内されており、歯車装置はまた、中心歯車１４、静止第一外輪１６、および可動第二外輪２０と噛み合う遊星歯車であって、エンジンの第二プロペラを回転駆動するために下流方向に延在する軸３１に固定されている遊星キャリア３０上に回転自在に装着されている遊星歯車２８も、含む。   Reference is first made to FIG. 1, which is a central or sun gear 14 constrained to rotate with the turbine shaft 10, a stationary first outer ring 16 mounted on a turbomachine stationary element 18, an engine propeller. Two reverse rotations driven from the turbine shaft 10 through a planetary step-down gear unit 12 which basically includes a movable second outer ring 20 fixed to the end of the shaft 22 for rotationally driving one of them. FIG. 1 shows a known planetary step-down gearing mounted on a turbomachine, such as an aircraft turbojet, having a propeller with a shaft extending downstream and rotated by a bearing 24 on a stationary structural element 26 of the engine The gear unit is also a planetary gear that meshes with the center gear 14, the stationary first outer ring 16, and the movable second outer ring 20, Planetary gears 28 which are rotatably mounted on the planet carrier 30 on which is fixed to the shaft 31 extending in the downstream direction to a second propeller driven rotation also includes.

より正確には、各遊星歯車２８は、第二外輪２０の内側の１組の歯と噛み合う第一周囲組の歯３２、および第一組の歯と同じ軸上にあって遊星歯車２８の上流末端に形成されている第二組の歯３４を含み、この第二組の歯３４は、静止第一輪１６の内側の組の歯と噛み合っている。   More precisely, each planetary gear 28 has a first peripheral set of teeth 32 that meshes with a set of teeth inside the second outer ring 20 and an upstream of the planetary gear 28 on the same axis as the first set of teeth. A second set of teeth 34 is formed at the distal end, and this second set of teeth 34 meshes with the set of teeth inside the stationary first wheel 16.

各歯車２８はまた、例えばローラ軸受などの軸受３８によって、遊星キャリア３０の円筒形支持体３６上に回転的に装着および案内されている。   Each gear 28 is also rotatably mounted and guided on a cylindrical support 36 of the planet carrier 30 by a bearing 38 such as a roller bearing.

ステップダウン歯車装置１２は、図１に模式的に示されるように、エンジンの静止要素によって担持され、それぞれ遊星歯車２８の外側の組の歯３２および第二外輪２０、遊星歯車２８の外側の組の歯３４および第一外輪１６、ならびに遊星歯車２８の周囲組の歯３２および中心歯車１４の間の噛み合いが発生する領域の方に向けられている、ノズル４０、４２、４４によって、潤滑および冷却される。   The step-down gear unit 12 is carried by a stationary element of the engine, as schematically shown in FIG. 1, and the outer set teeth 32 and the second outer ring 20 of the planetary gear 28 and the outer set of the planetary gear 28, respectively. Lubrication and cooling by nozzles 40, 42, 44, which are directed towards the area where meshing between teeth 34 and first outer ring 16 of the planetary gears 28 and the surrounding teeth 32 of the planetary gear 28 and the central gear 14 occurs. Is done.

その他のノズル４６および４８は、軸１０を回転的に案内するための軸受５０、および第二外輪２０に固定された軸２２を回転的に案内するための軸受２４を潤滑および冷却するために、使用される。   The other nozzles 46 and 48 are used to lubricate and cool the bearing 50 for rotationally guiding the shaft 10 and the bearing 24 for rotationally guiding the shaft 22 fixed to the second outer ring 20. used.

図２は、ステップダウン歯車装置１２の必須要素、すなわち中心歯車１４、静止第一外輪１６、軸２２に固定された第二外輪２０、および遊星歯車２８を示しており、本実施形態には遊星歯車２８が４つ存在し、矢印は歯車、可動外輪２０、および遊星キャリア３０の回転方向を示している。   FIG. 2 shows essential elements of the step-down gear device 12, that is, the center gear 14, the stationary first outer ring 16, the second outer ring 20 fixed to the shaft 22, and the planetary gear 28. There are four gears 28, and arrows indicate the rotation directions of the gears, the movable outer ring 20, and the planet carrier 30.

中心歯車１４が反時計回り方向に回転駆動されているとき、遊星歯車２８および可動外輪２０は時計回り方向に回転駆動されており、その一方で遊星キャリア３０は反時計回り方向に回転していることが、わかる。   When the central gear 14 is rotationally driven in the counterclockwise direction, the planetary gear 28 and the movable outer ring 20 are rotationally driven in the clockwise direction, while the planet carrier 30 is rotated in the counterclockwise direction. I understand that.

この知られている実施形態において、ノズル４０、４２、および４４は回転せず、輪の内側の遊星歯車２８の軌道運動を追跡することができないので、遊星歯車の各組の歯が中心歯車１４と噛み合う領域、およびこれらが輪１６および２０と噛み合う領域は、断続的にのみ潤滑および冷却されることが可能である。さらに、従来技術は、遊星歯車の軸受３８を潤滑および冷却するためのいかなる解決策も提供しない。   In this known embodiment, the nozzles 40, 42, and 44 do not rotate and cannot track the orbital motion of the planetary gear 28 inside the ring, so that each set of teeth of the planetary gear is center gear 14. The areas meshing with and the areas where they mesh with the wheels 16 and 20 can only be lubricated and cooled only intermittently. Furthermore, the prior art does not provide any solution for lubricating and cooling the planetary gear bearing 38.

本発明は、図３および図４に模式的に示される装置によって、単純な、信頼性の高い、そして安価な方法で、この問題を解決することができ、この装置は基本的に、ステップダウン歯車装置１２の上流側で、静止外輪１６の内側に位置する円筒形ケーシング５２を含み、円筒形ケーシング５２は、遊星歯車２８の間でステップダウン歯車装置１２の内部に延在する軸方向アーム５４によってこれが固定されている遊星キャリア３０とともに回転するように制約される。   The present invention can solve this problem in a simple, reliable and inexpensive manner by means of the apparatus schematically shown in FIGS. 3 and 4, which basically steps down. A cylindrical casing 52 located upstream of the gear unit 12 and inside the stationary outer ring 16 includes an axial arm 54 extending between the planetary gears 28 and into the step-down gear unit 12. Is constrained to rotate with the planet carrier 30 to which it is fixed.

円筒形ケーシング５２は、中心歯車１４を担持する軸に沿ってステップダウン歯車装置１２に向かって上流から延在し、その内部半径方向隔壁６０によって円筒形ケーシング５２の内部に形成された隣接する環状区画内に油を噴霧するインジェクタ５８に取り付けられている、２つの直径方向に対向するストリップ５６によって送達される油を回収するための遠心スコップを形成する。円筒形ケーシング５２の各環状区画は、外向きに延在して、潤滑および冷却されるべき領域の方へ、すなわち遊星歯車２８のボール軸受３８の方へ、および遊星歯車２８が静止外輪１６と、可動外輪２０と、および場合によっては中心歯車１４と噛み合う領域の方へ向いているノズル６８とその自由端において取り付けられている、放射状または実質的に放射状の導管６２、６４、６６に接続されている。   The cylindrical casing 52 extends from the upstream toward the step-down gear unit 12 along the axis carrying the central gear 14 and is adjacent to the annular shape formed inside the cylindrical casing 52 by its internal radial partition wall 60. A centrifugal scoop is formed to collect the oil delivered by two diametrically opposed strips 56 attached to an injector 58 that sprays the oil into the compartment. Each annular section of the cylindrical casing 52 extends outwardly towards the region to be lubricated and cooled, ie towards the ball bearing 38 of the planetary gear 28 and the planetary gear 28 is connected to the stationary outer ring 16. Connected to the movable outer ring 20 and, in some cases, to a nozzle 68 pointing towards the area meshing with the central gear 14 and a radial or substantially radial conduit 62, 64, 66 attached at its free end. ing.

図３に模式的に示されるように、ノズル６８は、遊星歯車２８の回転方向に対してこれらの歯車から上流方向に位置するような方法で、およびその油のジェットを、歯車が第一輪１６、第二輪２０、および中心歯車１４の組の歯とそれぞれ噛み合い始める領域において歯車の歯の組の上に接線方向に向けるような方法で、遊星歯車２８に対して角度を付けて位置決めされる。   As schematically shown in FIG. 3, the nozzles 68 are positioned in an upstream direction from these gears with respect to the rotational direction of the planetary gear 28, and the jet of oil is transferred to the first wheel by the gears. 16, the second wheel 20 and the central gear 14 are positioned at an angle with respect to the planetary gear 28 in such a way that they are directed tangentially above the gear tooth set in the region where they begin to mesh with the tooth of the set. The

図４は、本発明のステップダウン歯車装置１２がどのようにして図１に示されるタイプのターボ機械に組み込まれるかを模式的に示す。   FIG. 4 schematically shows how the step-down gearing 12 of the present invention is incorporated into a turbomachine of the type shown in FIG.

中心歯車１４は、円筒形ケーシング５２の内部に油を供給するためのストリップ５６の下流末端に装着されたノズル４４によって、潤滑および冷却されることが可能である。中心歯車１４は輪１６および２０の内径よりもはるかに小さい外径を有しているので、静止している２つの直径方向に対向する点で遊星歯車２８の周囲組の歯３２が中心歯車１４と噛み合う領域を潤滑することは、十分であって、遊星歯車２８の周囲組の歯３２および３４が外輪２０および１６とそれぞれ噛み合う領域の断続的な潤滑よりもはるかに少ない問題を生じさせる。   The central gear 14 can be lubricated and cooled by a nozzle 44 mounted at the downstream end of the strip 56 for supplying oil inside the cylindrical casing 52. Since the central gear 14 has an outer diameter that is much smaller than the inner diameter of the rings 16 and 20, the peripheral set of teeth 32 of the planetary gear 28 is located at the center gear 14 at two diametrically opposed points. Lubricating the meshing area is sufficient and causes much fewer problems than intermittent lubrication in the area where the peripheral sets of teeth 32 and 34 of the planetary gear 28 mesh with the outer rings 20 and 16, respectively.

あるいは、図５は、図１のターボ機械の部品と関連する、図４と同じ要素を示す。   Alternatively, FIG. 5 shows the same elements as FIG. 4 associated with parts of the turbomachine of FIG.

本発明はまた、外輪を１つしか有していない遊星ステップダウン歯車装置にも適用可能である。このような状況の下で、例えば、第二外輪２０は保存されたままで、省略されるのは第一外輪１６であってもよい。プロペラのピッチ、すなわちプロペラを形成する羽根の角度設定を調整することによって、両者が平衡状態に到達するまで他方を加速する役割を果たす１つのプロペラを制止しながら、他方に対する１つのプロペラの速度を決定することが可能である。   The present invention is also applicable to a planetary step-down gear device having only one outer ring. Under such circumstances, for example, the first outer ring 16 may be omitted while the second outer ring 20 is preserved. By adjusting the pitch of the propeller, i.e. the angle setting of the blades forming the propeller, the speed of one propeller relative to the other is controlled while stopping one propeller that serves to accelerate the other until they reach equilibrium. It is possible to determine.

Claims (8)

中心歯車（１４）、外輪（１６、２０）、ならびに中心歯車（１４）および外輪（１６、２０）と噛み合う遊星歯車（２８）を含む遊星ステップダウン歯車装置であって、遊星歯車が遊星キャリア（３０）上に回転自在に装着されており、歯車装置が遊星歯車（２８）の１組の歯（３２、３４）および軸に油を噴霧することによって動作する潤滑および冷却手段を含み、歯車装置は、潤滑および冷却手段が、遊星キャリア（３０）に固定されて油を回収するスコップを形成する円筒形ケーシング（５２）を含み、このケーシングが油を送達するための静止手段を包囲していることを特徴とする、遊星ステップダウン歯車装置。 A planetary step-down gear arrangement comprising a central gear (14), outer rings (16, 20) and a planetary gear (28) meshing with the central gear (14) and outer rings (16, 20), wherein the planetary gear is a planet carrier ( is rotatably mounted on 30) comprises a lubrication and cooling means operate by gearing spraying oil to a set of teeth (32, 34) and shaft of the planetary gear (28), The gearing comprises a cylindrical casing (52) in which the lubrication and cooling means are fixed to the planet carrier (30) to form a scoop for collecting oil, which surrounds the stationary means for delivering oil. A planetary step-down gear device, characterized in that 円筒形ケーシング（５２）が、遊星歯車（２８）の組の歯および軸の方に向いているノズル（６８）に油を供給するための放射状導管（６２、６４、６６）を含むことを特徴とする、請求項１に記載の歯車装置。   The cylindrical casing (52) includes radial conduits (62, 64, 66) for supplying oil to the nozzles (68) facing the set of teeth and shafts of the planetary gear (28). The gear device according to claim 1. 油を送達するための静止手段が、中心歯車（１４）の軸と平行で、円筒形ケーシング（５２）の方に半径方向に向いているインジェクタ（５８）を担持する、少なくとも１つのストリップ（５６）を含み、ケーシングは、その各々がノズルに油を供給するための導管（６２、６４、６６）に接続されている、半径方向隔壁によって分離されている環状区画を含むことを特徴とする、請求項１または２に記載の歯車装置。   The stationary means for delivering oil carries at least one strip (56) carrying an injector (58) parallel to the axis of the central gear (14) and facing radially towards the cylindrical casing (52). And the casing is characterized in that it comprises an annular section separated by a radial partition, each connected to a conduit (62, 64, 66) for supplying oil to the nozzle, The gear device according to claim 1 or 2. 油を送達するための静止手段が、円筒形ケーシング（５２）の環状区画の方に向いているインジェクタ（５８）を担持する、２つの直径方向に対向する平行なストリップ（５６）を含むことを特徴とする、請求項３に記載の歯車装置。   The stationary means for delivering oil comprises two diametrically opposed parallel strips (56) carrying injectors (58) facing the annular section of the cylindrical casing (52). The gear device according to claim 3, wherein the gear device is a feature. ノズル（６８）が、遊星歯車からその回転方向に対して上流に位置し、遊星歯車の組の歯に対して接線方向に、前記組の歯が外輪（１６、２０）と噛み合う領域の方に向いていることを特徴とする、請求項１から４のいずれかに記載の歯車装置。   Nozzle (68) is located upstream from the planetary gear in its rotational direction, tangentially to the teeth of the planetary gear set, towards the region where said set of teeth meshes with the outer ring (16, 20) The gear device according to claim 1, wherein the gear device is oriented. 円筒形ケーシング（５２）および遊星キャリア（３０）が、中心歯車（１４）の両側に軸方向に位置しており、これらが遊星歯車（２８）の間に延在する軸方向アーム（５４）によって互いに接続されていることを特徴とする、請求項１から５のいずれかに記載の歯車装置。   A cylindrical casing (52) and a planet carrier (30) are axially located on both sides of the central gear (14), and these are by an axial arm (54) extending between the planet gears (28). The gear device according to any one of claims 1 to 5, wherein the gear device is connected to each other. ２つの同軸外輪（１６、２０）を含み、輪の組の歯が遊星歯車（２８）の周囲組の歯と噛み合っており、輪のうちの１つが静止していてもう一方が回転的に可動であることを特徴とする、請求項１から６のいずれかに記載の歯車装置。   Including two coaxial outer rings (16, 20), the teeth of the ring set mesh with the teeth of the surrounding set of the planetary gear (28), one of the rings is stationary and the other is rotationally movable The gear device according to any one of claims 1 to 6, wherein: タービン軸（１０）を１つまたは２つのプロペラ駆動軸に接続する、請求項１から７のいずれかに記載の遊星ステップダウン歯車装置を含むことを特徴とする、ターボ機械または航空機エンジン。 Connecting the turbine shaft (10) to one or two propeller drive shaft, it characterized in that it comprises a planetary step-down gear device according to any one of 請 Motomeko 1 7, turbomachine or aircraft engines.
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FR2942284A1 (en) 2010-08-20
CA2751521C (en) 2017-04-04

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